Онтогенетическая структура и состояние популяций некоторых редких видов сем. Оrchidaceae в Самарской области

Abstract

On the territory of the Samara region, natural populations of 11 representatives of fam. Orchidaceae. The basic ontogenetic spectra of populations are determined: the right-sided spectrum is characteristic for 4 species (Neotianthe cucullata, Orchis ustulata, Dactylorhiza fuchsii, Epipactis palustris), centered for 7 representatives (Herminium monorchis, Cephalanthera rubra, Cypripedium calceolus, Dactylorhiza incarnata, Gymnadenia conopsea, Orchis militaris, Platanthera bifolia). The registered populations are mostly mature, unstable. The dynamics of the number of individuals in some species requires specification. In most cases, populations of model species are small, and the number of individuals in them often continues to decrease. A stable population in the Samara region is observed in Cephalanthera rubra, Cypripedium calceolus, Dactylorhiza incarnata, Epipactis atrorubens, Orchis militaris. The state and structure of populations of all kinds are sensitive to the intensification of the anthropogenic press.